:root {
    --bg-dark: #121212;
    --bg-panel: #1e1e1e;
    --bg-panel-hover: #2a2a2a;
    --text-main: #e0e0e0;
    --text-muted: #9e9e9e;
    --accent-vintage: #d4c4a8; /* Parchment-like */
    --accent-vintage-dark: #b89f7d;
    --border-color: #333;
    
    --font-title: 'Cinzel', serif;
    --font-ui: 'Inter', sans-serif;
    
    --border-radius: 6px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-ui);
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

h1, h2, h3, .subtitle {
    font-family: var(--font-title);
    color: var(--accent-vintage);
}

.app-container {
    display: flex;
    height: 100%;
    width: 100vw;
}

/* --- SIDEBAR CONTROLS --- */
.sidebar {
    width: 350px;
    min-width: 350px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0,0,0,0.5);
    z-index: 10;
}

header {
    text-align: center;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

header h1 {
    font-size: 1.8rem;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--accent-vintage-dark);
}

.control-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-vintage);
}

.form-control {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: var(--border-radius);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--accent-vintage);
    box-shadow: 0 0 5px rgba(212, 196, 168, 0.3);
}

/* --- UPLOAD SECTION --- */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent-vintage);
    background-color: rgba(212, 196, 168, 0.05);
}

.drop-icon {
    font-size: 2rem;
    color: var(--accent-vintage-dark);
    display: block;
    margin-bottom: 10px;
}

.preview-container {
    position: relative;
    margin-top: 10px;
    text-align: center;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 10px;
}

#image-preview {
    max-width: 100%;
    max-height: 150px;
    object-fit: contain;
}

#btn-remove-image {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(200, 50, 50, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* --- BUTTONS --- */
.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-ui);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--accent-vintage-dark);
    color: var(--accent-vintage);
    margin-top: 10px;
}

.btn-secondary:hover {
    background-color: rgba(212, 196, 168, 0.1);
}

.btn-primary {
    background-color: var(--accent-vintage-dark);
    color: var(--bg-dark);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-vintage);
}

.btn-primary:disabled {
    background-color: #555;
    color: #888;
    cursor: not-allowed;
}

.btn-accent {
    background-color: #8a2be2; /* Deep purple for export, or dark red */
    background-color: #611e1e;
    color: var(--accent-vintage);
    border: 1px solid #8b2b2b;
}
.btn-accent:hover {
    background-color: #8b2b2b;
}

/* --- CUSTOM CONTROLS --- */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.checkbox-container input {
    margin-right: 10px;
    width: 16px;
    height: 16px;
    accent-color: var(--accent-vintage);
}

.flex-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.color-picker {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    background-color: var(--bg-dark);
}

.color-picker::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-picker::-webkit-color-swatch {
    border-radius: 4px;
    border: none;
}

.divider {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, transparent, var(--border-color), transparent);
    margin: 20px 0;
}

.info-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 15px;
}

.hidden {
    display: none !important;
}

/* --- CANVAS AREA --- */
.canvas-container {
    flex: 1;
    background-color: #222;
    background-image: 
        linear-gradient(45deg, #2a2a2a 25%, transparent 25%, transparent 75%, #2a2a2a 75%, #2a2a2a), 
        linear-gradient(45deg, #2a2a2a 25%, transparent 25%, transparent 75%, #2a2a2a 75%, #2a2a2a);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
    padding: 40px;
}

.canvas-wrapper {
    background-color: white; /* Represents the white paper */
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    position: relative;
    /* Transformation handled via JS to fit screen or zoom */
    transform-origin: center center;
}

/* A subtle paper texture overlay */
.canvas-wrapper::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100" height="100" filter="url(%23noise)" opacity="0.05"/></svg>');
    pointer-events: none;
}

/* --- KO-FI BUTTON --- */
.kofi-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #000000;
    color: #cca43b; /* Dark gold */
    border: 2px solid #cca43b;
    padding: 10px 20px;
    border-radius: 30px;
    font-family: var(--font-title);
    font-weight: bold;
    font-size: 1rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.7);
    z-index: 1000;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.kofi-button:hover {
    transform: translateY(-2px);
    background-color: #1a1a1a;
}

.beer-emoji {
    display: inline-block;
    animation: beerBounce 1.5s infinite ease-in-out;
}

@keyframes beerBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}